[INFO] crate pixel_engine 0.0.9 is already in cache
[INFO] checking pixel_engine-0.0.9 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate pixel_engine 0.0.9 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate pixel_engine 0.0.9 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate pixel_engine 0.0.9
[INFO] finished tweaking crates.io crate pixel_engine 0.0.9
[INFO] tweaked toml for crates.io crate pixel_engine 0.0.9 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate pixel_engine 0.0.9 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fbf0336d08d53c1b1e056c942a86e7d78e8422b5ea3bd111ece8593ea1375ea6
[INFO] running `"docker" "start" "-a" "fbf0336d08d53c1b1e056c942a86e7d78e8422b5ea3bd111ece8593ea1375ea6"`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling sdl2 v0.32.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling sdl2-sys v0.32.6
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking getrandom v0.1.12
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking pixel_engine v0.0.9 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:424:9
[INFO] [stderr]     |
[INFO] [stderr] 424 |         ((num/* - 1*/) * self.px_size as i32)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:424:9
[INFO] [stderr]     |
[INFO] [stderr] 424 |         ((num/* - 1*/) * self.px_size as i32)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `ray_angle` is never read
[INFO] [stderr]   --> examples/fps.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let mut ray_angle = 0_f64;
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `wall_distance` is never read
[INFO] [stderr]   --> examples/fps.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |     let mut wall_distance = 0_f64;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `stepsize` is never read
[INFO] [stderr]   --> examples/fps.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |     let mut stepsize = 0.1_f64;
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `hit_wall` is never read
[INFO] [stderr]   --> examples/fps.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut hit_wall = false;
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `boundry` is never read
[INFO] [stderr]   --> examples/fps.rs:92:9
[INFO] [stderr]    |
[INFO] [stderr] 92 |     let mut boundry = false;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `eye_x` is never read
[INFO] [stderr]   --> examples/fps.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |     let mut eye_x = 0_f64;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `eye_y` is never read
[INFO] [stderr]   --> examples/fps.rs:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |     let mut eye_y = 0_f64;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `test_x` is never read
[INFO] [stderr]   --> examples/fps.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |     let mut test_x = 0_i64;
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `test_y` is never read
[INFO] [stderr]   --> examples/fps.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |     let mut test_y = 0_i64;
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `vx` is never read
[INFO] [stderr]   --> examples/fps.rs:98:9
[INFO] [stderr]    |
[INFO] [stderr] 98 |     let mut vx = 0_f64;
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `vy` is never read
[INFO] [stderr]   --> examples/fps.rs:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |     let mut vy = 0_f64;
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `d` is never read
[INFO] [stderr]    --> examples/fps.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |     let mut d = 0_f64;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `dot` is never read
[INFO] [stderr]    --> examples/fps.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let mut dot = 0_f64;
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `bound` is never read
[INFO] [stderr]    --> examples/fps.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |     let mut bound = 0_f64;
[INFO] [stderr]     |         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `ceiling` is never read
[INFO] [stderr]    --> examples/fps.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |     let mut ceiling = 0;
[INFO] [stderr]     |         ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `floor` is never read
[INFO] [stderr]    --> examples/fps.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |     let mut floor = 0;
[INFO] [stderr]     |         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `col` is never read
[INFO] [stderr]    --> examples/fps.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |     let mut col = engine::Color::BLACK;
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b` is never read
[INFO] [stderr]    --> examples/fps.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |     let mut b = 0_f64;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `col` is never read
[INFO] [stderr]    --> examples/fps.rs:205:13
[INFO] [stderr]     |
[INFO] [stderr] 205 |             col = engine::Color::BLACK;
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/fps.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let mut reader = std::io::BufReader::new(file); 
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `n_neighbour` is never read
[INFO] [stderr]   --> examples/maze.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let mut n_neighbour: Option<Cell> = None;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `s_neighbour` is never read
[INFO] [stderr]   --> examples/maze.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let mut s_neighbour: Option<Cell> = None;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `w_neighbour` is never read
[INFO] [stderr]   --> examples/maze.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |     let mut w_neighbour: Option<Cell> = None;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `e_neighbour` is never read
[INFO] [stderr]   --> examples/maze.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let mut e_neighbour: Option<Cell> = None;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `nextpos` is never read
[INFO] [stderr]   --> examples/maze.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut nextpos: &Dir = &Dir::None;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]   --> examples/maze.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let mut x: i32 = 0;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `y` is never read
[INFO] [stderr]   --> examples/maze.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let mut y: i32 = 0;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.22s
[INFO] running `"docker" "inspect" "fbf0336d08d53c1b1e056c942a86e7d78e8422b5ea3bd111ece8593ea1375ea6"`
[INFO] running `"docker" "rm" "-f" "fbf0336d08d53c1b1e056c942a86e7d78e8422b5ea3bd111ece8593ea1375ea6"`
[INFO] [stdout] fbf0336d08d53c1b1e056c942a86e7d78e8422b5ea3bd111ece8593ea1375ea6